Well, it could be a really interesting story. Maybe they would have to deal with the fact that they are triplets while also being in different houses at Hogwarts. Harry in Gryffindor, Hermione in Gryffindor too, and Draco in Slytherin. There would be a lot of conflict and also some unexpected bonding as they discover their shared origin.
The fanfiction could explore their family dynamics. Who are their real parents? How did they end up separated? There could be a mystery to solve. Also, their relationships with other characters would change. Ron might be a bit jealous of Draco being Harry's and Hermione's triplet. And Snape might have a different attitude towards Harry and Draco knowing they are related. It would be a story full of twists and turns as they navigate their newfound connection.
The relationship between Harry and Draco would change drastically. Instead of being rivals, they would have to come to terms with being brothers. There would be a lot of initial tension as Draco's Slytherin upbringing clashes with Harry's Gryffindor values, but eventually they might learn from each other. Hermione, being part of the triplets, would act as a mediator between them.
In fanfiction, anything can be possible. Writers might rewrite the backstories of the characters. Maybe they could create a scenario where some powerful magic was involved at their birth that made them triplets despite their different families in the original story. For example, a dark wizard could have experimented with a spell that merged three different pregnancies into one, creating the situation where Hermione, Draco and Blaise are triplets.
The theme of redemption can also be seen. If Draco was a bit of a bully before, being part of the triplet bond with Harry can lead to a path of redemption. And for Harry, it can be about understanding Draco better. There's also the theme of shared destiny. As triplets, their fates are intertwined more closely than before, and they have to face the future together in ways they never expected.
Since houses play a major role in a student's identity at Hogwarts, for Harry, Draco and Blaise being triplets would mean redefining that identity. In Gryffindor, Harry has always been the hero figure, but with his Slytherin brothers, he might face some pushback from his housemates who are suspicious of the Slytherin connection. Draco in Slytherin would also have to deal with his own housemates' reactions. And Blaise, regardless of his house, would be in the middle of this complex situation. Their journey as triplets would be about finding a balance between their house identities and their family bond.
A frequent plotline involves their family drama. With Hermione being a Muggle - born and Draco and Blaise from pure - blood families, there would be a lot of family issues to deal with. For example, how would the Malfoy family react to having a Muggle - born as part of their family? Also, they might be forced to work together to protect their family from threats. Maybe an old enemy of the Malfoy family targets them because of their new family situation. There could also be a plotline where they explore their magical abilities together and discover new and unique forms of magic due to their special connection as triplets.
If Hermione and Draco were siblings, their family would have to navigate two very different worlds. On one hand, they would have the elitist and often dark - tinged Slytherin world that Draco is a part of. On the other, there's Hermione's world of academic achievement and a more inclusive view of the wizarding community. Their parents would have to balance teaching them magic in different ways. Draco would probably be taught more about the pure - blood supremacy ideas initially, while Hermione would be encouraged to explore all aspects of magic regardless of blood status. It would be a family full of contradictions and debates.
In some fanfictions, Hermione might bring her intelligence and determination into the marriage. If she were married to Harry, they'd likely be a power couple in the wizarding world, fighting for justice together. With Draco, it could be a more complex relationship of reconciling their different backgrounds. They might constantly have to deal with the prejudices of their respective Houses, but over time, learn to understand and support each other in new ways.
Well, it would change the story a great deal. Firstly, Harry would have a more stable home environment with Severus as his guardian. He wouldn't be so alone at the Dursleys'. Draco, on the other hand, might learn different values from Severus rather than just pure - blood supremacy from his family. And Hermione would have an adult figure in the wizarding world who truly understood her thirst for knowledge. The whole dynamic between the three of them would shift from rivalry to more of a sibling - like relationship under Severus' care.
Well, their wedding would probably be a blend of two very different worlds. Hermione would likely want a somewhat traditional ceremony with lots of books and knowledge-themed decor, like maybe having old scrolls as part of the table settings. Draco, on the other hand, might bring in some of the Malfoy elegance with silver and green accents. The guest list would be a hodgepodge of Hogwarts alumni, with Gryffindors and Slytherins eyeing each other warily at first. But overall, it would be a magical affair filled with love and the mending of old rivalries.
Well, she might have a bit of a mischievous side too. Draco had his moments of causing trouble in his school days, and Hermione was not always a perfect rule - follower either. Their daughter could be a bit of a rebel, but in a good way. For instance, she might break some minor school rules to stand up for what she believes in. She could also be very charming, able to make friends easily despite her parents' complex pasts.